Metallic roof for tanks



Jan. 19 1926. I 1,570,311

. J. T. MAGUIRE unTALLIc Roo;r von wins Filed nay 19. 1924 Patented Jan. 19, 1926.

UNITED STATES JOSEPH T. MAGUIRE, OF CHEVY CHASE, MARYLAND.

METALLIC ROOF FOR TANKS.

Application led May 19, 1924. ySerial No. 714,251.

To all whom t may concern:

Be it known that I, Josnrn T. Maenner, a citizen of the United States, residing at Chevy Chase, Maryland, have invented new and useful Improvements in Metallic Roofs for Tanks, of which the following is a specification.

This invention relates to improvements in rooting and more particularly to metallic roofing for covering circular buildings such as oil tanks, silos and the like.

In order that a clearer perception of they present invention may be had it is to be noted that heretofore for the most part metallic roofing for circular buildings has been made of relatively flat sheet metal supported from either radially disposed or concentrically disposed girders.

There has been a serious objection to this due to the expense and weight of the material, for it is a well understood principle that flat sheet metal must be made materially thicker to withstand the weights and strains imposed upon itthan would corrugated metal. Consequently it has beenv attempted to use corrugated sheet metal thereby to reduce the weight and expense but great diiiiculty has been experienced in obtaining the desired material for the reasons that the plates are of the triangular or sector shape and the corrugations cannot be made therein along radial lines by any present known machinery and, further, where it has been attempted to do so it has been impossible to properly interfit the adjacent sections to prevent leakage.

It is, therefore, one of the present objects of the invention to provide an improved metallic roofing of the above general character which shall be light thereby toreduce the expense yet at the same time suiiiciently strong to withstand the weights, pressures, stresses and strains to which the roof may be subjected. l

A further object is to provide a roofing of the above character made in sections that will permit ready interfitting of the various parts in a weather-tight manner.

A further object is to provide animproved arrangement of beam supports and girders whereby the moving plates may be conveniently attached and positioned and secured to each other to accomplish the de sired results.

Other objects will be in part obvious and in part hereinafter pointed out `in connection with the accompanying sheet of drawings illustrating one of various possible embodiments of the invention and wherein several reference characters denote corresponding elements in the various views.

In these drawings, Figure 1 is a partial plan view of the roof. l

Figure 2 is a detailedl sectional view adjacent the part A of the roof, Figure l.

Figure 3 is a detail sectional view adjacent the'part B, Figure 1.

VFigure'l is a detail plan View of the part shown in Figure 3.

Figure 5 is a diagrammatic plan View of the roof of the tank showing the arrangerment of girders and supports.

Referring lnow to the drawing in det-ail there is shown in Figure 5 a plan view of the under tank roof which comprises a main outer shell orside plating wall 1() having concentrically disposed with respect thereto a series of circular girders 11, these circular girders being connected by means of Yradial beams 12 supported at intervals by means of uprights 13 symmetrically arranged about a central post 14. y

The rooling is composed of a series of plates as shown in Figure 1, each group comprising three sections indicated at 15, 16 and 17, the middle section 16 being mate rially longer than the other sections whereby the plates may he applied to the rooting girders in the intervening manner clearly indicated in Figurevl. j

Each of these sections is grooved or corrugated longitudinally thereby greatly strengthening each plate andv permitting materially thinner constructions. Such an arrangement Ahas two obvious advantaves, namely, an increase in strength with a re uction in weight'and also material decrease in the cost of manufacture and installation.

This arrangement, however, it will be seen, provides a plurality of open triangular spaces which must be covered by plates 18 in order to render the roof weather tight. There is, therefore, provided flat substantially triangular sheet metal members 18 which may be suitably attached under the main corrugated plates 16 at the sides and overlapping a member 2O as shown more clearly in Figure 2, which member 20 in turn is Vshaped to closely overlap the next lower adjacent corrugated sections 15 or 17 as the case may be as well as the upper edge of plate 1S therebelow. This member 20 has a relatively tlat portion 21 adapted to fit under the plate 18 at its top edge like a shingle on a root and a corrugated portion 22 integrally formed therewith and adapted to coact with the corrugations ot the plate 17 therebelow.

In this manner the entire roofing elements may be easily and quickly assembled and secured one with another to provide a strong substantial and durable rooting which at the same time will be weather tight. The grooves in the main plates will, ot course, carry off the water rapidly and etliciently and such rain as may tall on the triangular plates 18 will drain dcwn onto the special connecting part 20 and thence to the corrugated section immediately therebelow.

It will thus be seen that the present 1nvention provides a simple and practical rooting particularly adapted to accomplish, among others, all of the objects and advan* tages herein set forth.

It will further be noted that the present invention may be used with corrugated metal plates, corrugated asbestos sheets or any similar material and it will be further noted that the connections between adjacent plates may be made with rivets or clinch rivets or by welding or soldering or by any other' method by means of which one metal plate may be securely attached to another metal plate.

What I claim is 1. In a roofing of the character described, in combination` main sections composed ot a plurality ot parts, each part being provided with a plurality et longitudinally disposed parallel corrugations, said sections being radially disposed about the roof and intervening plates adapted to close the openings between adjacent sections and means for draining the 'water to the corrugations ot the next lower niain'section.

Q'. In a rooting of the character described, in cou'ibination, a plurality of main sections radially disposed, each section comprising three portions provided with longitudinal parallel grooves, the central portion being longer than the adjacent portion whereby when the parts are assembled triangular spaces will'be leit therebetween and means including tlat plates adapted to close said triangular spaces and corrugated portions adapted to interit with the corrugations 0f the section immediately therebelow.

3. In a rooting ot the character described, in combination, a plurality of supports including concentrically disposed girders, a series ot plates,V radially disposed with respect to the center ot the rootI and supported from said girders, each plate comprising three sections, the central one of which is longer than the adjacent ones and each section being corrugated longitudinally in parallel grooves.

1. In a rooting ot the character described, in combination, a plurality of supports including concentrically disposed girders, a series ot plates having parallel longitudinal grooves and radially disposed with respect to the center of thel roof and supported from said girders, each plate comprising three or more portions,y the central one of which is longer than the adjacent ones and means for closing the triangular spaces formed between said radially disposed plates.

5. In a roofing of theA character described, in combination, a pluality of supports in cluding concentrically disposed girders, a series ot plates having parallel longitudinal grooves and radially disposed with respect to the center of the roof and supported from said girders, each plate comprising three portions, the central one of which is longer than the adjacent ones, means for closing the triangular spaces formed between said radially disposed plates, said means including plates having a iiat portion and a corrue gated portion.

6. In a rooting oi" the character described, in combination, a plurality of supports including concentrically disposed girders, a series of corrugated plates radially disposed with respect to the center of the root and supported `from said girders, each plate comprising three sections, the central one of which is longer than the adjacent ones, means tor closing the triangular spaces formed between said radially disposed plates, said means including a Hat plate adapted to close said triangular opening and a member supported on a girder having a portion fitting below said flat plate and a corrugated portion coacting with the corrugations of the next section therebelow.

Signed at Washington, District of Columbia, this 29th day of March, 1924.

JOSEPH T. MAGUIRE. 

